[vtkusers] Filtering vtkpolydata

[Bryn Lloyd]

Dear Ali Habib,

The problem is that sometimes the part of the mesh that you want to  
remove is the largest.

I would be pragmatic and use paraview:

1. First run (your code) the connectivety filter such that it does not  
remove any regions, but labels them.

2. In paraview, find out which region you want and extract it e.g. via  
the threshold filter.

Cheers
Bryn